On Monday 2009-06-29 16:09, Manuel López-Ibáñez wrote: >2009/6/29 Richard Guenther wrote: >> On Mon, Jun 29, 2009 at 3:10 PM, Jan Engelhardt wrote: >>> Hi gcc list, >>> >>> >>> I am forwarding below's bugreport here(*), to implicitly make aware >>> of a feature that I deem important to have in a future gcc. >>> >> >> -Wconversion should say >> >> t.c:4: warning: conversion to ‘unsigned char’ from ‘int’ may alter its value
I added -Wconversion to the Linux kernel's global cflags (KBUILD_CFLAGS) just to see what would happen. As I expected, I get swamped with warnings, like "conversion to int from unsigned int". All legitimate in themselves, I would have preferred an option (or even no option at all, given that the "large integer implicitly truncated to unsigned type" warning is shown without any -W flags) that only flags up truncation problems with literals.
